package com.atguigu.eduService.controller;
import com.atguigu.commonutils.R;
import com.atguigu.eduService.entity.EduTeacher;
import com.atguigu.eduService.entity.vo.TeacherQuery;
import com.atguigu.eduService.service.EduTeacherService;
import com.atguigu.servicebase.exceptionhandler.GuliException;
import com.baomidou.mybatisplus.core.conditions.Wrapper;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import io.lettuce.core.Limit;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import io.swagger.annotations.ApiParam;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.StringUtils;
import org.springframework.web.bind.annotation.*;

import java.util.HashMap;
import java.util.List;

/**
 * <p>
 * 讲师 前端控制器
 * </p>
 *
 * @author 亚当
 * @since 2022-04-24
 */
@Api(description = "讲师管理")
@RestController
@RequestMapping("/eduService/teacher")
@CrossOrigin //解决跨域
public class EduTeacherController {
    // 把service注入
    @Autowired
    private EduTeacherService eduTeacherService;

    // 查询edu_teacher表中所有数据
    @ApiOperation(value = "所有讲师列表")
    @GetMapping("/findAll")
    public R findAllTeacher(){
        List<EduTeacher> list = eduTeacherService.list(null);
        return R.ok().data("items",list);
    }
    // 逻辑删除讲课老师方法
    @ApiOperation(value = "逻辑删除讲师")
    @DeleteMapping("{id}")
    public R deleteTeacher(@ApiParam(name = "id",value = "讲师id",required = true) @PathVariable String id){
        boolean flag = eduTeacherService.removeById(id);
        if(flag){
            return R.ok();
        }  else {
            return R.error();
        }

    }
    // 3.分页查询讲师方法
    // current 当前页 ，limit 每页显示记录数
    @ApiOperation(value = "分页查询讲师")
    @GetMapping("pageTeacher/{current}/{limit}")
    public R pageListTeacher(@PathVariable long current,
                             @PathVariable long limit){
        // 创建分页对象
        Page<EduTeacher> teacherPage = new Page<>(current,limit);
        eduTeacherService.page(teacherPage,null);
        long total = teacherPage.getTotal(); //总记录数
        List<EduTeacher> records = teacherPage.getRecords(); // 数据List集合
        HashMap map = new HashMap<>();
        map.put("total",total);
        map.put("rows",records);
        return R.ok().data(map);
        //return R.ok().data("total",total).data("rows",records);
    }
    // 4.条件查询带分页的方法
    @ApiOperation(value = "条件查询带分页的方法")
    @PostMapping("pageTeacherCondition/{current}/{limit}")
    public R pageTeacherCondition(@PathVariable long current,
                                  @PathVariable long limit,
                                  @RequestBody(required = false) TeacherQuery teacherQuery){
        // 创建page对象
        Page<EduTeacher> eduTeacherPage = new Page<>(current,limit);
        /*try{
            int i=10/0;
        }catch (Exception e){
            throw new GuliException(20001,"执行了自定义异常...");
        }*/
        // 构建条件
        QueryWrapper<EduTeacher> queryWrapper = new QueryWrapper<>();
        // 判断条件是否为空，如果不为空则拼接条件
        String name = teacherQuery.getName();
        Integer level = teacherQuery.getLevel();
        String begin = teacherQuery.getBegin();
        String end = teacherQuery.getEnd();
        if(!StringUtils.isEmpty(name)){
            queryWrapper.like("name",name) ;
        }
        if(!StringUtils.isEmpty(level)){
            queryWrapper.eq("level",level);
        }
        if(!StringUtils.isEmpty(begin)){
            queryWrapper.ge("gmt_create",begin);
        }
        if(!StringUtils.isEmpty(end)){
            queryWrapper.le("gmt_modified",end);
        }
        //排序
        queryWrapper.orderByDesc("gmt_create");
        // 调用方法实现条件查询分页
        IPage<EduTeacher> page = eduTeacherService.page(eduTeacherPage, queryWrapper);
        long total = eduTeacherPage.getTotal();//总记录数
        List<EduTeacher> records = eduTeacherPage.getRecords();// 数据List集合
        return R.ok().data("items",records).data("total",total);
    }
    // 5.添加讲师的方法
    @ApiOperation(value = "添加讲师的方法")
    @PostMapping("addTeacher")
    public R addTeacher(@RequestBody EduTeacher eduTeacher){
        boolean save = eduTeacherService.save(eduTeacher);
        if(save){
            return R.ok();
        }else {
            return R.error();
        }

    }
    // 6.根据讲师ID进行查询
    @ApiOperation(value = "根据讲师ID进行查询")
    @GetMapping("getTeacher/{id}")
    public R getTeacher(@PathVariable String id){
        EduTeacher teacher = eduTeacherService.getById(id);
        return R.ok().data("teacher",teacher);
    }
    // 7.讲师修改方法
    @ApiOperation(value = "讲师修改")
    @PostMapping("updateTeacher")
    public R updateTeacher(@RequestBody EduTeacher eduTeacher){
        boolean updateById = eduTeacherService.updateById(eduTeacher);
        if(updateById){
            return R.ok();
        }else {
            return R.error();
        }
    }
}

